Car-truck bolster.



PATENTED FEB. 28, 1905.

S. P. BUSH.

GARTRUCK BOLSTER.

APPLICATION FILED MAB.. 6, 1903.

IVI--- ILMK.

IN VENTOR 3W Attorney WITNESSES No. essere.

Patented February 28, 1905.

SAMUEL l). BUSH, UF COLUMBUS, Ol'fllO.

ennwrnuea acteren.

SPECIFICATION forming part of `Letters Patent No. 783,676, dated February 28, 1905.

Application iilcd March 6, 1903. Serial No. 146,475.

Beit known that I, SAMUEL P. Busi-i, a resident of Columbus, in the county of Franklin and State o't' Ohio, have invented certain new and useful Improvements in Car-'llruck Bolsters; and I. do hereby declare the following to be a `full, clear, and exact description ol the invention, such as will enable others skilled inv the art to which it appertains to make and use the same.

My invention relates to an improved eartruck bolster, the object of the invention being to provide improvements ol this charaeter which will comprise one integral steel casting so 'formed as to secure the maximum strength with minimum weight; and with this object in View the invention consists in certain novel features olE construction and combinations and arrangements oi' parts, as will be more full y hereinafter described,and pointed out in the claims.

ln the accompanying drawings, Figure 1 is a side view illustrating my inu'n'ovements. Fig. 2 is a top plan view. Fig. is a view in section on the line e a of Fig. Al. Fig. t is a viewin section on the line ol. Fig. 1. Fig. 5 is aview in section on the line e c ol Fig. 1, and Fig. 6 is a View in section on the line d Z of Fig. 1. y

My improved bolster is one integral casting, comprising an upper plate 1, a bottom or lower plate 2, and connecting and reinforcing webs and lianges, as will hereinafter appear. The top plate 1 is ot' greatest breadth at its center and gradually tapers to its ends and is of greatest height at its center and slightly inclines toits ends and has integral central bearing a, side bearings 7), and depending side iiangescthroughout its central portion. The bottom plate 2 is narrower than top plate 1 and inclines upward from its center to its ends. The top and bottom plates 1 and 2 are connected at the center by a cylindrical sleeve or post 3, from which radiate longitudinal and transverse webs 4 and 5, respectively, and a strengthening flange or web G is located centrally on bottom plate 2 throughout its entire length, while the central web 7 on upper plate l only extends thrrmghout a portion oli its length, altl'lough it might extend throughout the entire length, il" preferred. Cross-webs 8 comlect the top and bottom members 1 and 2 at their end portions, which are approximately parallel, as shown, and three of these cross-webs are shown at each end. 'llwo oli these webs 8 project out beyond the side edges ol the bolster proper and lorm guides for the truck-posts, flanges 9 being made on the top and bottom members between the protruding' ends oi ci'osswe| s 8 to Yform l earing-faees ior the posts. 'lhe ends ol the lower plate 2 profeet outward beyond the end cross-webs t3 and the upper plate, andthe endsol thelower plate are curved, as shown, and have `[langes 1() around their edge, which are lowest at the center of the plate and incline upward to the sides, where they malte liuncture with the end cross-web S. 0n the lower iiace ol bottom plate 2 circular lugs 10*L are provided to hold the springs in place.

Slight changes might be made in the general :form and arrangement of the parts described without departing from my inven tion, and hence l do not conlinemysel'l tothe precise details set forth, but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of my invention.

lflaving fully described my invention, what l claim as new, and desire to secure by Letters Patent, is-

1. A metal bolster, comprising top and bottom plates, a cylindrical post connecting said plates at their center and cross-webs connecting them at their ends, and said cross-webs extending beyond the plates 'forming guides AFor the truck-posts.

2. A metal bolster, comprising an integral casting, forming top and bottom plates, a central hollow post having longitudinal and cross webs connecting the plates, side flanges on the top plate, and longitudinal and cross webs connecting the top and bottom plates.

A metal bolster, comprising an integral casting Forming top and bottom plates, a lon gitudinal central web and cross-webs at the ends of the bolster connecting' the top and bottom plates thereof, and the ends of the bottom plate extending beyond the top plate and a flange all around said protruding ends of the bottom plate.

4. A metal bolster comprising an integral casting formed of a top and a bottom plate connected at each end by cross-webs that extend beyond the plates to form guides for the truck-post; also connections at intermediate points.

5. A metal bolster comprising top and bottom plates, a post Connecting said plates at their Centers and Cross-Webs connecting them at their ends, said cross-.Webs extending beyond the plates and forming guides for the truck-posts.

6. A metal bolster comprisingan integral casting forming top and bottom plates, a central post having longitudinal and cross webs connecting the plates, side flanges on the top plate and longitudinal and cross Webs connecting the top and bottom plates.

'7. A metal bolster Comprising an integral casting formed of top and bottom plates connected at each end by a plurality of cross- Webs which extend beyond the plates and intei-mediate flanges on the plates that form guides and bearings for the truck-posts.

8. A metal bolster comprising in an integral casting, top and bottom plates, a central post connecting the plates, side :flanges depending from the top plate, and longitudinal side Webs connecting' the top and bottom plates at their ends.

1n testimony whereof I have signed this specification in the'presenee of two subscribing Witnesses. p

SAMUEL P. BUSH. lfitnesses:

JOSEPH STAFFORD, J. W'.. GLAZE. 

